admin: gift granting, collectible attribute/number control, and Layer 228 moderation tools

Admin console additions (Layer 228):
- Give Gifts: dedicated tab with sorted Lottie/TGS gift picker + inline form; grant any catalog gift to a user/channel from 777000 (no charge)
- Upgraded/collectible delivery: mint a unique gift with admin-selected model/pattern/backdrop and custom number, or random/auto (DB FK + UNIQUE(gift_id,num) enforce invariants)
- SCAM/FAKE flags for users/channels (migration 0136) with configurable profile warning (TELESRV_SCAM_WARNING/TELESRV_FAKE_WARNING)
- Support toggle, force channel settings incl. gigagroup (migration 0137), username management, cosmetic color/emoji-status
- Emoji admin tab (custom emoji list + document IDs + Lottie/TGS preview)
- Bot management; soft UI / dark theme
Wired through Router -> admin.Service -> adminapi -> BFF -> React panel (en/zh/ru).

cmd/telesrv-admin/web/src/pages/Routes.tsx

@@ -5,12 +5,14 @@ import { ChannelDetailPage } from "./ChannelDetailPage";
 import { ChannelsPage } from "./ChannelsPage";
 import { BotDetailPage } from "./BotDetailPage";
 import { BotsPage } from "./BotsPage";
+import { EmojiPage } from "./EmojiPage";
 import { Dashboard } from "./Dashboard";
 import { GroupMessageDetailPage } from "./GroupMessageDetailPage";
 import { GroupMessagesPage } from "./GroupMessagesPage";
 import { MessageDetailPage } from "./MessageDetailPage";
 import { MessagesPage } from "./MessagesPage";
 import { GiftsPage } from "./GiftsPage";
+import { GiveGiftsPage } from "./GiveGiftsPage";
 
 export function Routes({ route, navigate }: { route: RouteState; navigate: Navigate }) {
   const accountID = route.path.match(/^\/accounts\/(\d+)$/)?.[1];
@@ -33,10 +35,16 @@ export function Routes({ route, navigate }: { route: RouteState; navigate: Navig
   }
   if (route.path === "/bots") {
     return <BotsPage navigate={navigate} />;
+  }
+  if (route.path === "/emoji") {
+    return <EmojiPage />;
   }
 	if (route.path === "/gifts") {
 		return <GiftsPage />;
 	}
+	if (route.path === "/give-gifts") {
+		return <GiveGiftsPage />;
+	}
   if (route.path === "/messages/detail" || route.path === "/messages/private/detail") {
     return (
       <MessageDetailPage